Study on the influence of laser pulse width on nanosecond pulse laser cleaning of 2A12 aluminum alloy surface composite coating

Junkai Zhen; Wei Zhang; Zhi Wei; Di Wang; Guangyong Jin; Leiping Guo

doi:10.1117/12.2690483

17 August 2023 Study on the influence of laser pulse width on nanosecond pulse laser cleaning of 2A12 aluminum alloy surface composite coating

Junkai Zhen, Wei Zhang, Zhi Wei, Di Wang, Guangyong Jin, Leiping Guo

Author Affiliations +

Proceedings Volume 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023); 1275719 (2023) https://doi.org/10.1117/12.2690483
Event: 3rd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2023), 2023, Kunming, China

Abstract

In this paper, the effect of nanosecond pulsed laser pulse width on the effect of laser cleaning of 2A12 aluminum alloy surface composite coating is discussed. By establishing a simulation model of nanosecond pulsed laser paint removal, and conducting experimental research on nanosecond pulsed laser cleaning of 2A12 aluminum alloy, the temperature field of 2A12 aluminum alloy surface composite coating under different laser pulse width conditions was recorded and analyzed by thermal imager and spot pyrometer, and the surface morphology of the substrate was observed by metallographic microscope to explore the influence of laser pulse width on the surface composite coating of 2A12 aluminum alloy by nanosecond pulse laser cleaning. The experimental results show that the cleaning effect is better when the pulse width is 200ns under the condition of average power of 45W and frequency of 130kHz scanning speed of 2.5mm/s, at which time the coating is basically removed and the oxide film of the aluminum alloy substrate is revealed. In the process of nanosecond pulsed laser cleaning aluminum alloy, the pulse width of the pulsed laser has a greater influence on the temperature, and the wider the pulse width of the pulsed laser, the longer the temperature rise time and temperature rise duration of the surface material, and the thermal effect of the laser cleaning effect is also more obvious. When the pulse width is narrower, the peak temperature is higher and the continuous temperature rise time is shorter.

Citation Download Citation

Junkai Zhen, Wei Zhang, Zhi Wei, Di Wang, Guangyong Jin, and Leiping Guo "Study on the influence of laser pulse width on nanosecond pulse laser cleaning of 2A12 aluminum alloy surface composite coating", Proc. SPIE 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023), 1275719 (17 August 2023); https://doi.org/10.1117/12.2690483

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KEYWORDS

Alloys

Aluminum

Coating

Composites

Laser applications

Thermal effects

Thermography

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